Table of Contents
Multi-Tech Systems, Inc. MMCModem GPRS Developer’s Guide (S000445D)
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Table of Contents
Chapter 1 – Product Description and Specifications .............................................................................. 5
Introduction ........................................................................................................................................... 5
AT Command Information ................................................................................................................... 5
Product Ordering Information ............................................................................................................. 5
Safety Notices and Warnings .............................................................................................................. 6
Wireless Safety ................................................................................................................................ 6
Safety Standards .............................................................................................................................. 6
Instructions to OEMs ........................................................................................................................ 7
Specifications ....................................................................................................................................... 8
Chapter 2 – Mechanical Drawing ............................................................................................................. 10
Chapter 3 – Electrical Characteristics .................................................................................................... 11
Introduction ......................................................................................................................................... 11
50-Pin Connector Interface ................................................................................................................ 12
Power Supply Pins Electrical Interface .......................................................................................... 15
Serial Link Electrical Interface ........................................................................................................ 16
ON / ~OFF Electrical Interface ....................................................................................................... 17
BOOT Electrical Interface .............................................................................................................. 18
Reset Signal (~RST) Electrical Interface ....................................................................................... 19
Flashing LED Electrical Interface ................................................................................................... 20
General Purpose Input/Output Electrical Interface ........................................................................ 20
Analog to Digital Converter Electrical Interface ............................................................................. 20
Audio Electrical Interface ............................................................................................................... 21
SIM Electrical Interface .................................................................................................................. 25
SPI Bus Electrical Interface ........................................................................................................... 27
Keypad Electrical Interface ............................................................................................................ 27
Chapter 4 – Non-Electrical Interfaces ..................................................................................................... 28
Flashing LED ....................................................................................................................................... 28
SIM Interface ....................................................................................................................................... 28
RF Interface ......................................................................................................................................... 29
RF Connector ................................................................................................................................. 29
RF Performances ........................................................................................................................... 29
DTE/DCE Interface Rates ................................................................................................................... 29
Chapter 5 – Test Board ............................................................................................................................. 30
Serial Test/Demo Board Components .............................................................................................. 30
Serial Test/Demo Board Block Diagram ........................................................................................... 31
Chapter 6 – Application Considerations ................................................................................................. 32
Hardware and RF ................................................................................................................................ 32
Firmware Upgrade .............................................................................................................................. 32
Changing the GPRS Quad Band ....................................................................................................... 32
Getting Started & Terminal Emulator Setup .................................................................................... 33
